:root{color-scheme:light dark;--bg:#f5f7fb;--panel:#fff;--text:#152034;--muted:#64748b;--accent:#2563eb;--line:#dbe3ef}body.dark{--bg:#0b1220;--panel:#121c2e;--text:#e4ecfb;--muted:#9aabc7;--line:#273550}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px system-ui,sans-serif}main{max-width:1100px;margin:auto;padding:24px}header{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--line);padding-bottom:16px}h1{margin:0 auto 0 0;font-size:24px}button{border:0;border-radius:7px;background:var(--accent);color:white;padding:9px 12px;cursor:pointer}input,textarea{width:100%;padding:10px;margin:6px 0;border:1px solid var(--line);border-radius:7px;background:var(--panel);color:var(--text)}#auth{max-width:430px;margin:60px auto;padding:28px;background:var(--panel);border-radius:12px;box-shadow:0 8px 24px #0001}#mail{display:grid;grid-template-columns:250px 1fr;gap:18px;margin-top:20px}aside,article{background:var(--panel);border-radius:10px;min-height:460px;padding:14px}.account,.message{display:block;width:100%;text-align:left;background:transparent;color:var(--text);border-bottom:1px solid var(--line);border-radius:0;padding:12px 5px}.account.active{color:var(--accent);font-weight:bold}#toolbar{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding:0 0 12px}#content{padding:14px 2px;white-space:pre-wrap;overflow-wrap:anywhere}.meta{color:var(--muted);font-size:12px}dialog{border:0;border-radius:12px;background:var(--panel);color:var(--text);max-width:510px;width:92%}dialog::backdrop{background:#0008}menu{display:flex;justify-content:flex-end;gap:8px;padding:0;margin:16px 0 0}#notice{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:#111c;color:#fff;padding:10px 15px;border-radius:8px;display:none}@media(max-width:700px){main{padding:12px}#mail{grid-template-columns:1fr}aside,article{min-height:auto}}